The Undying Ones received an entry in the 'All-New Official Handbook of the Marvel Universe A-Z #12 (2006).

History

The Undying Ones once held great power over Earth but were forced to return to their own dimension over a millennium ago when their powers began to fade for unexplained reasons. Their powers having been renewed, the Undying Ones unsuccessfully attempted to invade Earth again in recent years under the leadership of the Nameless One. The dimension of the Undying Ones has since been conquered by the creature known as the Slitherer or the Dark-Crawler.

The Undying Ones have come into conflict with Doctor Strange and the Defenders.

The Undying Ones are led by the Nameless One. "Nameless One" appears to be a title that can be inherited from the previous holder.